Electrocardiograph



FIG. 1 is a perspective view of an electrocardiograph;

FIG. 2 is another perspective view thereof;

FIG. 3 is a rear elevational view thereof;

FIG. 4 is a side elevational view thereof, the opposite side being a mirror image;

FIG. 5 is a top plan view thereof; and,

FIG. 6 is a front elevational view thereof.

The rippled bottom surface shown in broken lines in FIGS. 3, 4, and 6 forms no part of the claimed design. 

CLAIM The ornamental design for an electrocardiograph, as shown and described. 